Method of repairing cuts in pavements



April 2, 1929. LE VERN FOX 7 METHOD OF REPAIRING CUTS IN PAVEMENTS Filed Dec. 27, 1927 2 Sheets-Sheet l INVENTOR. BY Z6 %//2 2 0%. W

A TTORNEY.

' April 2, 1929. 1.: VER'N fox METHOD OF REPAIRING 5u'rs In mvsusms 2 Sheets-v-Sheet 2 Filed Dec. 27, 1927 INVENTOR BY Z6 16 /72 jhv.

A TTORNE Y.

Patented Apr. 2, 1929.

NITED S AT ,PATENT LEZV RN ox, on sr. LOUIS, MISSOURi.

IOFFICE- v ivin'rrron or REPAIRING- on'rsnv PAVEMENTS.

Application filed December 27, 1927. 'Serial No, 242,594.

It is well known that streetpavements are damaged by trench cuts made therein by plumbers, public utility companies and city employees and that these cuts usually cause a depressed or sunkenplace in the pavement shortly after the customary temporary repair has been made due to the dirt refill settling in the trench, and that this condition exists in the pavement until the permanent repair has been made by the city. The customary permanent repair is notprac'tical, immediately after the trench has been filled with loose dirt due to the'dirt fillsettling, hence the usual temporary repair is made to allow the dirt fill to settle before a permanent repair is made. d An object of my present invention isfto eliminate the usual temporary repair by making the permanent repair immediately after the dirt fill has been made; assettling ofthe loose dirt fill in the-trench out has no ill effect upon my permanent repair.

Other objects of myjipresentinvention are to provide a new and simple method of per manently repairing cuts in pavements, which includes, first,undercutting the lower edge oithe permanent concrete base bounding the trench cut; second, cutting away the solid earth directly below the concrete'base undercut to'the desired depth to provide a solid earth shoulder bounding the trench cut; third, drivingsuitable supports into the solid earth on one or more sides of the trench cut and leaving their upper ends exposed in an angular position into the trench out above the dirt fill; fourth, providing the trench out with a plurality of crossed reinforcing members ;,Vfifth, filling wet concrete into the trench cut above the dirt fill approximately to level with the concrete base of the pavement, which embeds the reinforcing members and the exposed ends of the supports,-sixth, laying suitable pavement finishing material upon the concrete base fill; and seventh,w hen desirable, placing a protecting plate over the finishing material until su'chtime asthe co crete fill has become set to avo d damage to the pavement cut repair trailic moving over-the repaired section of the pavement before the concrete base fill has become set. -fA;-further object otthe invention is to provide a simple, quick, inexpensive and highly eificient method of permanently repairing cuts in pavements so that the repaired section of the pavement will be as good as-Whenin its original condition and having such advantages as will appear more fullyfrom'the follow ng descr ption.

In order to enable others skilled in the art to whichthe invention relates to make" and use the same, I will now proceed to describe it, referring to the accompanying drawings,

in "which Fig. '1, is a sectional elevation of the usual pavement cut and trenchtherebelow.

Fig. 2, is a transverse sectional elevation-- of a pavement cut and trench fill, showing the'undercut recess in the original concrete base, the solid earth ledge or shoulder, the repaired concrete base supporting members,

Fig. 3, is a top plan view of a'pavement showing a p ortion'of the pavement out before the concrete base hasbeen filled in place;

a portion afterthe concrete base has been filledin place ;-and aportion showing'the surrepaired concrete base. V

Fig; 4, is a detail "showing amodified arrangement of the solid earth ledge for the repaired portion ofthe concrete base. I

Fig. 5, is a transverse sectional elevation of the pavement cut repair when completed. l

Fig. 6, is a longitudinal sectional elevation of the pavement cut :repair' when completed. Fig. is a perspective view of the pave face finishing. material in position up'on the;

inent cut repair after bricks, or blocks have been positioned as asu'rface finishing mate rial. i

3 i '3 P an view of a' nodified arrangement of the-concrete ,bas'e fill support ng members. s a

Myinvention ordiscoveryis adapted for permanently repairing pavement cuts to eliminate the temporary repairing thereof,

and, as illustrated in the drawing, the reference numeral 1 designates a cut in apav'ement 2 which passes through the finishing material 3 'andjthe' concrete base hot the pavement, and, which extendsdownwardly into the solid earthiiinthe form of a trench '6. The cut in the pavement referred to is the usual cut made by plumbers, gas and electric companies, cities'anol others in order sion to develop in the pavement which becomes an annoyance to trailic as well as an unsightly spot in the pavement. On the other hand, were the usual permanent repair made immediately, or soon after the filling of loose dirt into the trench 6, it would in time pack and settle in the trench below the lower face" of the concrete base repair, thus leaving a weak spot in the pavement which will sooner or later naturally settle with the dirt fill due to traffic constantly rolling over the repaired section in the pavement.

In repairing cuts in pavements by means of my method of permanent repair, settling of the dirt fill in the trench will not in any way weaken the concrete fill thereabove and the finishing material laid thereupon so as to allow a depression to be formed in the surface of the pavement dueto the dirt fill. settling.

In repairing any such pavement cuts, the hole or trench 6 in the solid earth 5 is filled in the usual manner with loose dirt '7 to its original height and should parties engaged to make'the permanent repair fail to be on hand. at that time, a suitable cover plate 8 is preferably placed over the pavement cut 1 in the pavement 2.

My method of repair begins after the dirt fill 7 has been attended to and it consists in undercutting the end walls 9 and side walls 10, of the original concrete base 4 bounding the cut- 1, to provide an undercut endless pocket 11, as clearly shown in Figs. 2, 3 and 5, and further in the cutting away of the solid earth 5 directly below the undercut portions 11 of the concrete base 4 to the desired de 3th to orovide )referabl an endless solid dirt ledge, or shoulder 12, although .not necessarily so, as the base may, without departing from the spirit of the invention be undercut at spaced distances to provide spaced undercutpockets 13 and spaced ledges, or shoulders 14, as shownin Fig. 4, instead of an endless undercut and endless solid dirt ledge, or shoulder 12, as shown in Fig. 3.

After the above has been accomplished, I

provide the solid end walls 9 of the trench cut 6 with a plurality of suitable supporting members 15 and the solid side walls 10 of the trench cut 6 with a plurality of like supporting members 16. The members 15 and 16 are driven into the solid earth 5 by any suitable means with a portion ofthe upper ends of the supporting members 15 and 16 eX- than the inner, or lower ends thereof. Like wise the supporting members 16 are preferably disposed in parallelarrangement, as shown in Figs, 3 and 6, although not necessarily limited thereto, asthey may also'be arranged at an angle to each other.

After the supportingmembers 15 and 16 have been positioned, a plurality of suitable crossed reinforcing members 1'? are positioned and suitably supported a suitable distance above the earth fill 7 and then the space above the earth fill 7 and ledge 12 and between the undercut walls of the original concrete base 4 is filled with wet concrete to a level approximately in a plane with the upper plane of the original concrete base 4. This operation provides a repaired concrete base fill section 18 which rests both upon the loose dirtfill 7, the ledge or shoulder 12, or in the pockets 11, if pockets are used, as shown in Fig. 4, and which concrete base fill section 18 is substantially supported by both the solid earth ledge 12 and the supporting members 15 and 16, the upper ends of which members are embedded in the concrete, as clearly shown in Figs. 5 and 6, so that should the loose dirt fill 7 settle after the concrete base section 18 has set, the supporting members 15 and 16 and the solid earth ledge will support the concrete base fill section 18 in a suspended state above the fill and prevent its settling with the dirt fill 7. The supporting members 15 and 16, as well as the crossed members 17 reinforce the concrete base fill 18 and insures it against damage due to tratfic rolling over the repaired section of the pavement. The undercut walls of the original concrete base 4, as well as the angularly disposed supporting members prevent lifting movement of the concrete base fill section 18. After the concrete base fill section 18 has been completed, it is topped off. with suitable finishing material, which, if the original finishing, or surface material is asphalt or even cement, stone or blocks, is preferably asphalt bricks 19 which will weldthemselves together without the use of a filler, or grout, and which will also form a tight jointwith the original finishing material of the pavement 2. If a finishing material, such as cement, vitrified bricks, blocks, or the like, is desired in place of the'asphalt bricks 19, it may be used without departing from the spirit of my invention, as is manifest.

Finally, after the pavement repair has been made, and in order to protect it for a period of hours thereafter, or untilthe concrete base fill section 18 can set, I preferably although not necessarily cover the repaired section in the pavement with a suitable cover plate 20, which is removed when the concrete base fill section 18 has become set. r I

The finishing material, when in the form of asphalt bricks 19, may, or may not be disposed sli htly above the upper plane of the original pavement finishing material, and, they mayextend to a point below the upper plane of the original concrete base 4:, as shown in Figs. 5 and 6, although I do not limit myselfthereto. I v p The many advantages of the herein described method ofrepairing cuts in pavement permanently, to eliminate temporary repairs, will readily suggest themselves to those skilled in the art to which it appertains.

From the foregoing description, it is evi dent that a simple and practical method for permanently repairing cuts in pavements has been d1sclosed,'but it is to be understood that I do not desire to restrict or limit m self'to the very details of the method shown and described, which is merely illustrative, it being obvious that changes, not involving the exercise of invention, may be made without conflicting or departing from the spirit of the invention within the scope of the appended claims. c Y

What I claim is:

1. The method of permanently repairing cuts in pavements over a dirt filled trench to eliminate temporary repairs, which consists in undercutting the pavement bounding the cut in the concrete base thereof, forming a solid earth ledge below the undercut portion of the concrete base at the upper edge of the trench, driving supporting members into the solid earth walls of the trench and allowing the upper ends thereof to extend into theconcrete base cut positionin ofreinforcing members above the trench fill, filling of concrete into the undercut concrete base cut and upon the solid earth ledge as well as the trench fill to a level substantial with the plane of the undercut concrete base and then applying a surface material to the concrete base fill and finall anal in a arotectin cover y il a: b

to the surface material. I v

2. The method of repairing cuts n pavements comprising undercutting, the lower edge of the concrete base of the pavement sur-v rounding the cut,-inserting a plurality of members into solid earth below the concrete,

base with their upper ends exposed into said cut, filling the cut and embedding the exposed ends of said members in concrete above a dirt fill to support the concrete fill from sinking.

3. The meth'odof repairing trench cuts in pavements consisting in driving a plurality of supports into the solid earth bounding the trench and allowing the upper ends of the supports to extend upwardly at an angle into theeut in the pavement and then filling the cut above the trench fill with concrete embed ding the upper ends of the supports therein.

the upper ends of the supportstherein and finally applying a finishing material to the concrete fill." l

5. The method ofrepairing cuts in pavements comprising beveling the lower edge of the concrete base of the pavement surround ing the cut, cutting away thesolid earth below the beveled lower edges of the concrete base to provide a supporting ledge, inserting a plurality of members nto the solid earth below the pavement and leaving their upper ends exposed into SillCl'Cllt,-POSltl01llllg reinforcing means in said cut, filling the cut and embedding the exposed ends of the said mem bers and said reinforeingmeans in concrete above afdirt fill and finally applying self sealing bricks upon said concrete fill to resurface the cut. 4 I,

6 The method of preparing a pavement cut for a permanent repair, wh ch consists in .undercutting at an angle the wallsof the.

concrete base surrounding the cut, driving supporting members into solid earth below the undercut portion of the concrete base'of the pavement with the upper ends thereof exposed above the fill, filling the pavement out with concrete to a level with the surrounding concrete base and embedding the exposed ends-of the supporting members therein, and

finally applying surfacing material in the form of asphalt bricks upon the concrete fill.

7. The method of permanently repairing cuts in pavements to eliminate temporary repairs, which consists in undercutting the concrete base surrounding the cut therein,

driving supporting members into the solid earth below the concrete base withthe upper ends extending into the concrete base cut, filling the concrete base cut with concrete and embedding the upper ends of the supporting members therein and finally apply ing surfacing material'tosaid concrete base 8. The method of permanently repairing cuts in pavements over a dirt-filled trench to eliminate temporary repairs, which consists in undercuttingthe concrete base surrounding the cut, the cutting of a solid earth ledge below the undercut in the concrete base at I the upper edge of the trench, driving supporting members into the solid earth walls of the trench and allowing the upperends thereof to extend into the concrete base cut, posi' tioning ofreinforcing members above the trench dirt fill, filling of concrete into the c undercut concrete base cut and upon the solid earth ledge as Well as the trench dirt fill to a level substantial with the plane of the concrete base surrounding the cut and then ap plying a surfacing material to the concrete base fill.

9. The method of making a permanent trench cutpavement repair, which consists of undercutting the lower edge of the original concrete base surrounding the trench cut, cutting away a part of the solid earth below the undercut portion of the original concrete base, forcing supports into the solid earth bounding the trench cut and exposing the upper ends thereof in the trench cut above a dirt fill in the trench cut, positioning of reinforcing members in the trench cut above the dirt fill, filling Wet concrete into the trench cut above the dirt fill and embedding the re inforcing members and the upper ends of the supports therein, and finally laying pavement surfacing means upon the concrete fill the upper face of which is adapted to conform to the contour of the surface of the original adjacent pavement.

1.0. A structure for repairing pavement trench cuts Which consists of angular-1y disposed supports driven into the solid earth below the pavement, a poured concrete body suspended by said supports in the cut and surfacing material laid upon said concrete body.

11. The method of permanently repairing cuts in pavements comprising undercutting the faces of the concrete base of the pavement bounding the cut and filling the cut with Wet self hardening paving material.

12. The method of permanently repairing cuts in pavements comprising undercutting the faces of the concrete base of the pavement bounding the cut, filling the cut With Wet self hardening paving material and applying a surfacing material to said self hardening paving material.

13. Themethod of permanently repairing cuts in pavements comprising undercutting the faces of the concrete base of the pave ment bounding the cut to provide a solid earth ledge below the undercut portion of the base and filling the cut with Wet self hardening paving material.

14. The method of permanently repairing cuts in pavements comprising undercutting the faces of the concrete base of the pavement bounding the cut. positioning reinforcing means in the cut and filling the cut and embedding the reinforcing means in concrete above a dirt fill.

15. The method of permanently repairing cuts in pavements comprising undercutting the faces of the concrete base of the pave mentbounding the cut, positioning reinforcing means in the cut, filling the cut and em bedding the reinforcing means in concrete above a dirt fill and applying a surfacing material upon said concrete.

In testimony whereof, I have hereunto atfixed my signature.

LE vnnu FOX. 

